Title :
A new six-transistor CMOS XOR circuit with complementary output
Author_Institution :
Dept. of Electr. Eng., Linkoping Univ., Sweden
Abstract :
A new CMOS XOR circuit based on pass transistors is proposed. It uses only six transistors to produce both an XOR and the complementary XNOR function. The circuit has full voltage-swing and negligible static power dissipation. A drawback is that the transistors need to be ratioed due to a feedback structure. Simulation results for the new circuit compared to simulation results for a reference XOR circuit indicated that the energy consumption was similar for the circuits. However, the propagation delay was 50% longer for the new circuit, due to the feedback structure. The main advantage of the new circuit was the reduction in device count from eight to six transistors
Keywords :
CMOS logic circuits; circuit feedback; delays; logic gates; complementary XNOR function; complementary output; energy consumption; feedback structure; full voltage-swing; negligible static power dissipation; pass transistors; propagation delay; six-transistor CMOS XOR circuit; CMOS logic circuits; Circuit simulation; Delay; Energy consumption; Feedback circuits; Inverters; MOSFET circuits; Power dissipation; Power engineering and energy; Threshold voltage;
Conference_Titel :
Circuits and Systems, 1999. 42nd Midwest Symposium on
Conference_Location :
Las Cruces, NM
Print_ISBN :
0-7803-5491-5
DOI :
10.1109/MWSCAS.1999.867755
